Bitcoin dominance measures Bitcoin’s share of the total cryptocurrency market: its market capitalization divided by the market capitalization of every tracked asset. On October 23, 2026, CoinMarketCap put the figure near 60.1 percent, with Bitcoin accounting for roughly $1.63 trillion of a $2.72 trillion market, close to the top of the narrow range the ratio has held all year.
The number looks simple, and that is the trap. The denominator changes depending on who does the counting. CoinMarketCap, CoinGecko and TradingView all apply the same formula but tally different coin universes, so the same day can produce readings several points apart. TradingView’s BTC.D, which covers only its top 125 coins, tends to run highest; CoinGecko, which tracks more than 20,000 assets, runs lowest; CoinMarketCap sits in between. None is wrong. They measure slightly different markets, and the useful habit is to pick one source and follow its trend rather than mixing readings in the same argument.
The denominator also includes stablecoins, and that matters more than it sounds. USDT and USDC count toward the total market, so a rush into dollar-pegged tokens can push Bitcoin dominance down even when no money has rotated into altcoins. That is why analysts sometimes quote a stablecoin-excluded version, which reads higher: roughly 67 percent in late October versus the headline 60.1. Both figures are honest; they answer different questions.
The most common misreading is treating a rising number as bullish conviction. Dominance is a ratio, so it can climb while Bitcoin’s price falls, as long as altcoins fall faster. That is what happened through October. Altcoins made up the bulk of liquidation activity, and Bitcoin’s share rose defensively rather than on fresh demand. The direction of the total market decides how to read the move: rising dominance in a rising market means Bitcoin is leading, while rising dominance in a falling market means investors are abandoning altcoins faster, a rotation to safety rather than to strength.
For the altcoin-versus-Bitcoin question, two indexes are more direct. CoinMarketCap’s Altcoin Season Index compares the top 100 coins with Bitcoin over 90 days and calls an altcoin season when 75 percent of them outperform; Blockchaincenter applies the same rule to the top 50. In late October both sat in neutral territory, well below the threshold, consistent with dominance near 60 percent and no altcoin season underway.
Bitcoin dominance is best treated as a relative-performance gauge with a noisy denominator. The historical range makes that clear: dominance was near 94 percent when CoinMarketCap’s records began in April 2013, when few other coins existed, and fell to roughly 33 percent at the peak of the 2018 altcoin boom. Big moves in the number tend to mark shifts between Bitcoin-led and altcoin-led phases, not changes in Bitcoin’s fundamentals. Use one provider consistently, check the direction of the whole market before drawing a conclusion, and remember that a headline number near a psychological level such as 60 percent is still a ratio, not a signal about where prices go next.
Source: BlockchainReporter.